Apparatus for forming radiators



March 4, 1930. KAMAZ|N 1,749,383

APPARATUS FOR FORMING RADIATORS Filed Oct. 12, 1927 3 Sheets-Sheet 1INVENTOR him/M14 m BY Mag AT ORN YS Marchl, 193(1). J KARMAZIN EJ49 383APPARATUS FOR FORMING RADIATORS Filed Oct. 12, 1927 3 Sheets-Sheet 2INVENTOR March 4, 1930. J. KARMAZlN 1,749,383

APPARATUS FOR FORMING RADIATORS Filed Oct. 12, 1927 5 Sheets-Sheet 3INVENTOR {0M [Karma/2m. B

Pa ama Mar. 4, 1930 v OF DETROIT, MICHIGAN APPARATUS FORFOBMING'RADIATORS I Bpplication filed October 12, 1927. Serial No.225,703.

. This invention relates to improvements in methods for assembling sheetmetal radiators and particularly relates to the method and means forassembling the fin and tube elements of the radiator as shown in mycopending application Serial No. 88,738, filed Feb. 17, 1926. A I Inthis prior application I have described a process for manufacturing andassembling. radiator cores of the fin and tube type each ofsaid radiatorcores comprising a stack of superposedfin elements having integraltapered tubular projections, the projections of one element beingadapted to telescope within theprojections of the adjacent elementwhereby continuous water conduits are formed from end to end of thecore.

It is one of the objects of this invention to provide an improved methodand'means :0 for assembling the radiator cores of the formation as abovedescribed after the core elements leave the dies of the formingmachine,-by means of a downwardly and outwardly projecting chute and ahorizontal l5 compacting table.

It is another object of this invention to provide a simplifiedarrangement of machines for the purpose of conveying the formed fin andtube elements to the stacking :0 machine in order that the process maybe continuous and more rapid than the hereto-L fore produced machines.

It isa still further object of this invention to provide a machine formanufacturing; 5 radiators in which a strip of sheet metalisprogressively deformed to form a fin andtube element and which issuitably guided from the die to a horizontal stacking'machin'e inorder,.that the plurality'of elements form- 0 ing the radiator core maybe under the op erators observation during the compacting action,thereby permitting the ready removal of any damaged element and itsreplacement before the final completion of the 5 core.

It is a further object of this invention to provide a fin chute whichreceives the cut strip core elements in a vertical position from a dieand by suitable means delivers a pin rality thereof in partially alignedand cominterfering with the operation of thedie madiagrammatically shownto pass through the pacted arrangement to a final horizontal compactingtable at which they are more desirably completed inasmuch as replacementmay be made with the least efi'ort, without The die 10 diagrammaticallyshown in.

Figure 1 is adapted to consecutively and pro-.

gressively punch and draw a strip of sheet metal to form a fin and tubeelement such as is shown in my prior Patents No. 1,527,736, patentedFeb. 24, 1925, and No. 1,591,322, patented July 6, 1926.

' This strip or fin and tube element is punched on a continuous strip 12which is so machine in the direction of the arrow in Figure1.- I Fromthe-die10 the strip 12 passes through the feed rolls 14 and theserollers are formed to aid in this delivery as well as to support 8. thestrip on one side of the shear blades 16.

- The shear blades 16 cut the strip to the proper length which may beregulated to suit the size of the radiator core to be formed. The strip17 after being cut projects beyond the cutters over the top of the chute18 where it will be forced downward to the stacking table 20. In orderthat the cutters will operate at a proper point in the movement of thestrip, a shaft 22 in positive connection with the die operating shaft.(not shown), is provided with a pair of cams 23 and 24, see Figure 2.The cam 24 operates with the cam follower 25 which is directly connectedto the shear blades 16. In other words, at each bla es 16 will beoperated once by the rota-- tion of the cam 24 and this rotation will beof the proper amount to correspond with the lineal discharge of thestrip from the die. it longer fin and tube elements are desired to beproduced, the relative rate of rotation of the shaft 22 may be regulatedby suitable earin in the positive driving connection from t e main diedrive shaft. l

The other cam 23, also directly attached to the shaft 22, operatesthrough the roller follower 27 to periodically move a pair of fingers28. These fingers 28 project upwardly and outwardly and when in theiruppermost position permit a fin and tube element to be placed in theupper end 18" of"- the chute 18. After the core element 17 has beenplaced in position and sheared by the blades 16, further rotation of theshaft 22 forces the fingers 28 downwardly and, .com-

ing in contact with the element-17 they will displace the strip throughthe chute. Slots 19 in the upper part 18 of the chute 18 permit freeoperation of these fingers 28. I

It will thus be seen that the operation of the machine is continuous andinvolves the continuous roller 14 which automatically draws the formedmaterial or metalstrip therethrough discharging it to the chute in whichthe continuously operating fingers 28 will discharge it to the stackingtable 20. The elements 17 all being cut to the proper length and beingpartially compacted in the chute and forced therefrom at the bottom 18,will then be moved from the end of the chute and finally compacted infull observation of the operator.

The bottom of the chute is provided'with an extended tableon which is alimit block 30 which is immovable. A lateral extension of the bottom ofthe chute is provided by the surface 32 on a level with the horizontalportion of the chute and on which a suitable number of core elementswill be drawn from the chute to be further alig'ned if necessary,

. and compacted. The table top 32 is provided with a non-movablevertical face 33 and a longitudinally movable vertical face 34 in directcontact with a screw and wheel 36 operating through a nut block 37. Aretaining plate 38 suitably locked in the movable face 34 by the pivotedplates 34*, is pivoted to the table at 39. This retaining plate 38secures the fin and tube elements from upward movement when the wheeland screw 36 are rotated to compact the elements formingbladeswhich'automatically cut the elements to the proper length and dropthem in the chute.

The fingers 28 then force the cut elements down the. chute from whichthey are removed and placed on thecompacting table at which time theoperator, after locking the wheel and screw 36 until completed. At thattime the wheel and screw 'wlll be released,-the

. plate 38 raised-and the core removed.

The operation is very rapid with the mini-* mum of manual effort andpermits the operator to notice'the roper alignment of the projections onthe n and tube elements while noting that they are properly forcedtogether permitting inspection as well asease in fabrication. If anyelement should be damaged,

'its removal and replacement would be extremely easy on the horizontaltable.

The chute 18 is adapted to be expanded or contracted either in width orin thickness in order that various sized elements may be provided. Theadjustments 42 ermit an adjustment in thickness and the a justments 42'will be provided for the proper lengths of plate 38 on top of thecorewill then rotate the chine for the particular purpose for whichdesigned and which is an improvement. on my prior application. Theresistance fur n'ished in the vertical chute and the horizontal travelfrom the end of the chute on the individual elements 17 is such thatthey will more readily align'themselves and will thus aid in the speedat which the machine may operate. It is also unnecessary to stop themachine to remove the core elements after being compacted. By providinga machine thatis readily adjustable, considerable economy may beefl'ected as many sized cores are used in the automotive and analogousindustries. The method of inspection provided by manual operation of thecompacting machine is also important as it is highly essen 'tial thateach of the multitude of individual projections on the tube elementscooperate with the, adjacent one in order that a tight joint is madethereby and this may be assured by inspection on the horizontalcompacting table rather than after the core was completed as formerly.

While I have shown a preferred form of embodiment of this invention, Iam aware that modifications thereof may be made and I therefore desireprotection on the herein "disclosed device and such .modifications thatfairly come within that disclosure and as' 1. In combination with asheet metal form-- ing machine of the character described,

adapted for forming tubular projections on a strip of sheet material,means for assembling successive sections of said material with thetubular projections thereof in engaging relation, said means consistingof a downwardly and outwardly projecting chute through which thesect1ons are forced with the'tubular projections in horizontalalignment, means for forcing the sections throu h said chute and meansat the bottom of t e chute for supporting the sections for visualinspection and subsequent compacting.

.2. In combination with a sheet metal forming machine of the characterdescribed, adapted for forming tubular projections on a strip of sheetmaterial, means for cutting said strip intoelements, means forsuperposing said elements with the projections thereofin engagingrelation, and means for horizontally compacting said elements in view ofthe operator.

3. In combination with a radiator forming machine of the characterdescribed, adapted for forming tubular projections on a strip of sheetmaterial, the walls of said pro'ections being of substantially the samethickness as the sheet, and means for assemblin the strip thus formedinto a radiator sai means comprising a downwardly and outwardlyprojecting chute for preliminary alignment and a horizontal compactingtable ad acent said chute for completm said core with said tubularprojections in orizontal ent.

4. In combination with a radiator making machine, adapted for formin astrip of radiator element forming material from a strip of sheetmaterial, an a device for cuttin the strip thus formed into elements ofumformlength, a stacking device adapted to 'superpose a predeterminednumber of said elements, said stacking device comprising a chute andfingers to force said elements vertically downward and horizontallyoutward from said chute. v v

5. Incombinationwith a-radiator forming I machine, adapted to form alurality of rows of inte al tubular projections from a flat sheet 0metal, means to cut the formed sheet into elementsof uniform size, meansto stack the elements in superposed relation with the projections of oneelement in registry. with.

erated block and a retaining plate above said elements to preventdisplacement during compacting.

6. A cutting and stacking device of the class described adapted toreceive a continuous strip of metal having a plurality of projectionsthereon, comprisin cutting mecha nism, a chute adjacent said cuttingmechanism, said chute adapted to partially telescope adjoining strips,and means to complate the telescopic relation between adjacent strips,

7. A cutting and stacking machine of the class described adapted toreceive a continuous strip of metal having a plurality of integraltapered projections thereon, comprising a cutting mechanism to cut thestrip into elements of a predetermined size, a chute adjacent saidcutting mechanism to receive said elements, said chute projectingdownwardly and outwardly and adapted to partially coinact said elements,and a horizontal table adjacent the end of said chute to complete thetelescopic engagement of the elements.

8. A stacking device of the class described adapted to successivelyreceive a plurality of sheet metal strips having a plurality of tubularrojections thereon, comprising a downwar dly and outwardl projectingchute, said chute adapted to partially telescope the tubular projectionsof adjoining strips, and means to complete the telescopic relationbetween adjacent strips.

9. A stacking machine of the class described adapted to receive aplurality of radiator core elements having a plurality of integraltapered projections thereon comprising a vertical chute having ahorizontal outlet, said chute adapted to partially telescope the taperedrojections or adjoining core elements, and a orizontal table adjacentthe end of said chute provided with means to complete the telescopicengagement of the elements in horizontal position.

\ In testimony whereof I have affixed my signature to' thisspecification.

' P JOHN KARMAZIN.

the projections of the preceding element, comprising means for pressingone element against the other, and means to deliver said 7 elements on ahorizontal table, and means for compacting the stack of elements, saidcompactmg means comprising a horizontally op-

